Summary
This chapter covers how to import unit testing libraries, write and run tests with various assertions, and apply a Test-Driven Development approach.

General domain of usage
Automated software testing in development processes

### Congratulations on completing the second section of this course!

In this section, you learned how to **import necessary libraries** for writing unit tests and how to **test your code using unit testing**. 

You **tested individual modules** and also learned about **various assertions** that will allow you to easily test any of your code. Additionally, you discovered the **Test-Driven Development** (TDD) approach to programming, and who knows, **maybe you've already decided to start programming using this approach**.

In any case, you've done great work! With tests, your **code will look much better and more professional**.

What is the primary purpose of unit testing?

In JUnit, what annotation is used to indicate a method is a test method?

What is a characteristic of a good unit test?

Which of the following is true about Test-Driven Development (TDD)?

In JUnit, how are assertions used in a test method?

In JUnit, what is the purpose of the `@BeforeEach` annotation?

What is the RED-GREEN-REFACTOR cycle in TDD?

Testing is an integral part of software development. Every module of an application should be covered by tests to ensure the correctness of a specific module or the entire application. This course will teach you about the different types of application testing. Additionally, you will practice with unit tests to test individual components of your application.

Let's talk about types of testing and which testing methods developers use. You will learn about the stages an application goes through before being delivered to the client and the specific tests you will need to write.


In this section, we're going to dive into unit testing — you'll get the rundown on its structure in Java and the ins and outs of crafting them the right way. Setting up your IDE, importing necessary libraries, and lots of hands-on practice.


In this section, we will enhance our coding skills by dealing with errors that can also be caught in unit tests. When testing an application, you may come across various errors, and sometimes they should be turned into exceptions. I will explain how to catch exceptions in your code, test them, and handle them properly.

Section 2 Summary

Congratulations on completing the second section of this course!

1. What is the primary purpose of unit testing?

2. In JUnit, what annotation is used to indicate a method is a test method?

3. What is a characteristic of a good unit test?

4. Which of the following is true about Test-Driven Development (TDD)?

5. In JUnit, how are assertions used in a test method?

6. In JUnit, what is the purpose of the `@BeforeEach` annotation?

7. What is the RED-GREEN-REFACTOR cycle in TDD?